Gas-pressure regulator and cut-off



(No Model.) l

` H. J. HYAMS.

'GAS PRESSURE REGULATOR AND GUT-OPP. Y No. 359,787. Patented Mar. 22, 1887.

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NITED STATES Partnr @trineo HYAM J'. HYAMS, OF PITTSBURG, PENNSYLVANIA.

GAS-PRESSURE REGULATOR AND CUT-OFF.

SPECIFICATION forming part; of Letters Patent N o. 359,787, dated March 22, 1387.

Application filed February 5, 1887. Serial No. 226,657. (No model.)

To @ZZ whom t may concern:

Be it known that I, HYAM J. HYAMS, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gas-Pressure Regulators' tor, the section being on the line xxof Fig. 2.

Fig. 4 is a diametrical crosssection on the line yy of Fig. 5. Fig. 5 is a plan view of the valve-seat.

Like symbols of reference indicate like paris in each.

In the drawings, 2 represents the regulator case or box. Near the top of the case is the diaphragm 3, which consists of a fiat plate of metal transversely and eccentrically pivoted by a horizontal pivot bar or rod, 4, and provided at the edges with a peripheral band, 5, of rubber or some other ilexible material, which is tightly secured between iianges ofthe box 2, as shown in Figs. 1 and 2. This arrangement of the diaphragm permils it to be oscillated freely on the axis 4.

6 is the inlet-port of the regulator, and 7 is the outletport. Pipes are screwed to these ports. The inlet-port 6 is controlled by a valve, 12. This is a double-faced valve in the i'orm of two superposed semispheres or truncated cones, a o', mounted on a vertical stem, S, with their bases outermost. The valve is arranged with reference to its seat 1S,as shown in the drawings, the seat being between the parts a c. The stem Sis pivotally and loosely attached to the end of a horizontal lever, 9, which is i'ulcrumed to a post, 10. The other end of the lever 9 is connected with the diaphragm 3 by a connecting-rod, 11, pivotally attached to the diaphragm and to the lever.

14 is a rod which projects up from the dia- 5o phragm 3, extending through a rubber plug,

15, into a removable cap, 16. Veights 17 are placed on the rod and determine the amount of gas-pressure needed to raise the diaphragm.

19 is the usual escape or leal; pipe.

The operation is as follows: When there is no gas-pressure in the pipes,the weights 17 on the diaphragm depress it on its pi vote, thereby raising the short arm of the lever 9 and raising the face of the part c of the valve into contact with the valve-seat of the inlet-port. (See Fig. 1.) No degree of pressure in the inletpipe can now unseat the valve, because the gas cannot rind entrance into the case 2 -to work the diaphragm. To put the regulator in operation, supposing that there is gas-pressure in the inlet-pipe, the cap 16 is unscrewed,and uthe rod 14: is `drawn up through the plug 15. This depresses the valve 12 and unseats the cone a', admitting gas into the box 2 and through the port 7, Fig. 2. The regulator accommodates itself to variations in the gas-pressure and keeps the outflow constant,for as the press ure rises it will raise the diaphragm on its pivot, thereby bringing the cone a nearer to its seat and cutting off the iiow through the port 6,and as the pressure falls the couuterbalance of the weights 17 will depress the diaphragm and admit more gas into the chamber 2 until an equilibrium is established. XVhen the pressure falls belowa certain point, which is determined by the amount of weighton the rod 14 and the degree of eccentricity of the pivot 4, the diaphragm will fall completely, thereby bringing the parts into the position shown in Fig. 1 and automatically cutting off the The points of invention in the regulator are as follows:

First, the rubber plug 15. The passage of gas through regulators often causes a vibration of the valve and diaphragm, which is audible throughout the building in which the regulator is located, and is therefore unpleasant and alarming. The use of the rubber plug, through which the rod 14 passes, prevents this vibration.

Second, thepeculiararrangementofthe'valve 12 and its connection with the diaphragm. I am aware that double valves in regulators are not new,andl do not claim them broadly; but I know of no such valve prior tominewhich was suspended vertically by a loose connection from a lever, which is operated by the diaphragm. Such valves have heretofore been horizontal,

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and have consequently had their stems arranged .in tubular guides,to enable them to be seated with accuracy. This increases the friction and cost. By swinging the valve loosely and vertically from the lever 9, it will adjust itself easily to its seat without any such guide.

Third, the construction ofthe valve-seat 18. Figs. 4 and 5 are detail views of the valveseat. It consists of two rings, Z1 and b', ofsheet metal, between which is clamped a exible ring, c. The ieXible ring projects within the central hole of the metal rings and affords a soft seat for both faces of the valve to lit against.

I claim- 1. In a gas-regulator, theeombinationof a diaphragm, a lever, 9, connected with the diaphragm and movable thereby, avalveseat,and a double-faced regulating-walvehaviug a vertical stem, 8, looselyT connected with the lever 9, substantially as and for the purposes described.

2. In a gas-regulator, the combination of an eccentrieally-pvoted diaphragm, a lever, 9, connected with the diaphragm and movable thereby, a valve-scat, and a double-faeed regulatingvalve having, a vertical stein, 8, loosely connected with the lever 9, substantially as and for the purposes described.

3. In a gas-regulator, the combination, with a diaphragm movable by variations in the gas pressure, of aplug,l6,and arod connected with the diaphragm and passing through the plug, substantially as and for the purposes described.

4.. In a gas-regulator, the combination, with a double-faced valve, of the valve-seat `18, interposed between the valve-faces and consisting of two rings, b and b', and a Iiexiblelring, c, interposed andclaniped between the rings b and b and 4projecting beyond the internal periph` cries of both thereof,whereby it forms a seat for both valve-faces, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this lst day of February, A. 111887.

HYAM J. IIYAMS.

Vitnesses:

THOMAS XV. BAKEWELL, XV. B. ComvIN. 

